Car-axle-driven dynamo



c. H.Qu|NN. CAR AXLE DRIVEN DYNAMO. APPLICATION FILED NOV. I8, |919.

Patented May 3, 1921.

2 SHEETS-SHEET I.

III

s vide a-pivotally supported belt tioned outside of the planes Driven Dynamos unirsnsrarss WENT OFFICE `CHARLES I-I. QUINN`,'OF ROANOKE, VIRGINA.

i cAn-AxLii-Dnivniv DYNAivio.

To all whom t may? concern:

Be it knownthat '1, CHARLES H. QUINN', a citizen of the United States, residing at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful Improvementsin Car-Axleand I do hereby declare the following -to be affull', clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to car` axle driven dynamos and more particularly to that type of dynamo which is lpivotally supported from a truck frame and whichis operatively connected'to a car axle by means ofy a belt.. The principal object of my invention,

generally stated, is to provide an adjustable tensioning mechanism for use in connection with the type of dynamo described above the said tensioning mechanism being locatec outside of the'planes of the truck we,V use.

Another objectof the invention is to provide a pivotally hung dynamo or generator with a belt tensioning mechanism located clear ofV obstructions and foreign objects which may lie between'the rails of the track.

Still another object is to vprovide a pivotally supported dynamo or generator with a belt tensioning mechanism so located with reference tothe generator thatthe lever arm between the point of application of the spring tension and the pivotal point -of the generator may be varied to suit any type of spring mechanism. Y

Another object of the namo with tensioningv means, .the said means being locatedy in a plane passing throughthe center of the car axle andthe center of thedynamo pulley andbeing posiof the car or truck wheels. 1 1

Y There are other objects of my invention as will appear with a more detailed descriptionv ofthevsingle embodiment of the invention which has been illustrated in the accompanying drawing and in which Y Figure l is a fragmentary view in side elevation'showing the invention applied to a pivotally supported dynamo or generator.

Specification of Letters' Patent.

inventionis to pro-vv driven dy.V

hereinafter in l connectionV` Fig. v2 is a topplan viewfof the structure illustrated ,in Fig. 1`, the ,dynamo and` con-v necting partbeing showny by dotted lines.-

Fig. '3 is a'view` infront elevation of one end of the generator or dynamo cradle showing the positionof' the same withfreference to itsf'supp'ort and the bracket for the tension rod and spring, and i v Fig. 4 is awview partially in sectionof; one.

the side ;member's,..thel end members 3 are preferably slotted'as at 5 to afford .open- Patented May 3, 192i..l

' Application ledy November 18, 1919. Serial No.` 338,863;

n one being shown) and intermediate members 4, 4f. Adjacent fication andv ydraW-4 i ings for the passage of rectangular barsfv Y i which support the generator or dynamo cradle hereinafter described. The vinner ends` of the bars 6 are suitably connected to the` side members 2,-'2 by means of thebolts 7 To maintain the bars .in parallell relation with the side members. and toiavoid-'be'nding the said barsl I lpreferably interpose blocks 8, 8, between each-bar and Vthe adjaA cent side fra-me member. T o the outer end soV of each bar 6 is connected a saddle or pivot.

member 9 for the cradle hangers 10. The said saddles are .bifurcated as shown at llrso as toy straddle the adjacent bar 7V to which they are firmly andfprefe'rably adjustably connected by the bolts 12. Eachsaddle is..

provided :with a pivot bearing 13 ,which is adapted `to coperatewith a pivot-pin or studr 14 carried by thecoperating hanger 10.- Y

n The said hangers are leach preferably fori'ned from a single piece of metal and are bent to form-a loop-or'eye l5,4 the upper po`rtion of which is suitably formed toreceive the said pivot pin 14C. The lower portions of the hanger are spaced apart a slight dis# tance to receive the attened ends 16 of the bars; 17 whichv extend under and formnthe support for the l'dynamo base 18. Theends 16 of the said bars are `firmlyY connected to.y

the adjacent hanger l0 by the rivets l19 and it will be observed that the said endsof the bars are inclined to the vertical so that the points of connection thereof are on a radius struck from the pin 14 as a center. By this construction I am venabled to widely separate the transversely extending portions of the bars 17 without materially increasing the width of the hangers 10 and by connecting the ends in the manner described practically relieve the bar 17 from torsional strains.

The dynamo base 18v is providedy with undercutrecesses 20 to receive the rods 17 and the said base is` firmly clamped to the rodsv by the clips 21 and the bolts22. The dynamo 23 is provided with a belt pulley 24, the latter being operatively connected to the axle pulley 25 through the belt 26.

Since the belt tensioning mechanism is merely `duplicated on opposite sides of the cradle, it will be only necessary for a com- Vplete understandingof the device to describe .one of the tensioning devices. The

, said mechanism preferably comprises a'pivot bracket 27 connected to the outer face of the pedestal brace 28 of the truck, by means of the bolts 29; a threaded tension rod 30 which is pivotally connected to the spaced perforated ears31 of the said bracket 27 by means of the'bolt or pin 32; a tension spring 33 which surrounds the rod 30 Vand lits over theV rod sleeve 34, the said spring being adapted to bear-at one end against the :weighted ad justing nut 35 and at its opposite end against the spring seat or thimblef36, the latter be-' ving splined on the tension rod and beingV adapted to lit within an opening 37 formed in the cradle bracket 38.

4is preferably formed as an angle bar and is The said bracket riveted to the outer face of the hanger 10 Vand may be bent as shown so as to bring the opening 37 therein in horizontal alinement Y with the opening in the ear of the bracket 27.

By changing the point of Vattachmentof the Y bracket 38, the lever arm for the spring tensioning device may be lengthened or shortened as desired so as to accommodate any of the diiiferent types of tensioning springs. The points of ,connection `between' the brackets 27 and 38 and the tensioning rod Vare preferably located in the horizontalV plane which passes through the centers of the car axle and the dynamo pulley.

' Byv utilizing the pedestal braces as the points of attachment for the spring tensioning device I shorten the overall length of the truck and generator, thereby adding greatly to the life of the generator, since the swinging of the truck when a car passes around a curve does notrcause portions of the generator mechanism to extend beyond the car line into a position to engage objects outside the tracks. By'locating the tension# ingmechanism outside of the planes of the truck or carvwheels it is unnecessary for the mechanic to go between the wheels to adjust the mechanism. All portions of the tensioning mechanism being-located outside of the wheels, all danger to the mechanic is avoided.

Having now fully described my invention what I claim and desire to .secure by Letters- Patent is: Y

1. In a car truck, the combination with a pivotally supported cradle,rof a dynamo Hconnected to said cradle, means for operatively connecting the dynamo to the truck axle, and means positioned between the truck and cradle and outside of the truck wheelsv for maintaining the said connecting means under tension. f

2. In a car truck, the combinationv with a cradle pivotally supported from the said truck, of a Vdynamo connected to said cradle, Y

means for operatively connecting the dynamo to one of the truck axles and a plurality of means located outside of the planes of the truck wheels and positioned betweenV the said truck and cradle for maintaining the connecting means under tension.

3. In a car truck, the combination' with a pivotally supportedl cradle, of .a dynamo connected thereto, means forvoperatively connecting said dynamo to the axle of the said truck, and means interposed betweenA ing between and connected to the said i hangers, a dynamo mounted on the said cradle, means for connecting said dynamo to an axle of the said truck, and `means for maintaining said connecting means underV tension, said .last named means being inter-- posed between the truck pedestal brace and a bracket connected to the outer face of the cradle hanger.

5. A cradle for a car axle driven dynamo, Y

comprising a pair of loop-shapedv hangers and apair of members connected to the hangers each having Vupwardly extending converging ends, the said converging ends intersecting in a common center line.

6. A. cradle for a car axle driven dynamo adapted to be rotatably ports carried by a cartruck, said cradle com,- prising a plurality of rigid hangers overlying said supports, and a pair of separated` members, having radially extendingV ends adapted to be connected to the said hangers in the vertical planes of said supports.

7. A cradle for a car axle driven dynamo adapted to be rotatably mounted on supports carried by a car truck, said cradle comprising a plurality oi hangers each adapted mounted on supi to straddle one of said supports and a pluadapted to straddle one of said supports, rality of U-shaped members, the last named and a plurality of U-shaped bars, the said members having their upwardly extending hangers having the lower portions thereof ends connected to the said hangers, said ends spaced apart so as to receive between them 5 downwardly diverging from the center of the adjacent ends of the said U-shaped bars, 15 rotation of the said hangers. and means for rigidly connecting the bars 8. A cradle for a car axle driven dynamo to the said hangers v adapted to' be rotatably mounted on supports In testimony whereof I aihx my signature. carried by a car truck, said cradle com- Y l10 prising a pair of loop-shaped hangers each CHARLES H. QUINN. 

